Webster's English Dictionary

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arteriosclerosis

ar.te.rio.scle.ro.sis \a:r-.tir-e--o--skl*-'ro--s*s\ \-'ra:t-ik\ n [NL] : a 
   chronic disease characterized by abnormal thickening and hardening of the 
   arterial walls - ar.te.rio.scle.rot.ic ajor ;n